机械防护MachineGuardingPowerPointPresentation解读.pptx

机械防护MachineGuardingPowerPointPresentation解读.pptx

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Machine Guarding Image credit: OSHA Session Objectives You will be able to: Understand the hazardous actions of different types of machinery Identify the hazards of working with machinery Identify machine safeguards and know how they work Properly operate machines with guards Why Machines Must Be Properly Guarded Point of operation hazards Power transmission apparatus hazards 800 deaths each year High injury rates Amputations, fractures, lacerations, and crushing Electric shock and burns Unsafe Machines Cause Injuries Poorly designed machines Poorly maintained machines Machines being used for unintended purposes Machine not properly installed Inadequate safeguarding Objects discharged from the machine Unsafe Actions Cause Injuries Reach around, under, over, or through guards into hazardous areas Remove or bypass guards Reach into equipment to remove stuck or jammed material Not use electrical safety procedures Not wear appropriate protective equipment Not know how to properly service or repair machines Regulatory Requirements 29 CFR 1910, Subpart O Applies to specific types of equipment Training Where Machine Hazards Occur Point of operation Drill bit cutting wood In-running nip points Power transmission apparatus Operating controls and moving parts Types of Rotating Machine Parts Collars, couplings, and cams Clutches, gears, and pulleys Flywheels Shafts, including shaft ends Image credit: OSHA Nip Points Hazard—hands, arms, or whole body get caught in nip Causes lacerations, crushing, amputation, or death Created by: Two parts rotating in opposite directions Parts rotating tangentially Parts rotating close to a fixed part Point of Operation Functions Cutting Punching Shearing Bending Compressing Cutting Machines and Actions Hazard—Cutting action, flying chips, or scrap material cut fingers or strike the head or body Machines Band and circular saws Boring or drilling Lathes and milling Actions Rotating, reciprocating, or transverse motion Punching Machines

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